Responding an image from lambda

Matplotlib created a temporary config/cache directory at /tmp/matplotlib-8j65adly because the default path (/home/sbx_user1051/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.

This the error I am getting.

import json import boto3 import pandas as pd from matplotlib import pyplot as plt from boto3.dynamodb.conditions import Key from datetime import datetime

dynamo=boto3.resource('dynamodb') table=dynamo.Table('airplotdata')

def lambda_handler(event, context): # TODO implement response=table.query(KeyConditionExpression=Key('id').eq('12468'), ProjectionExpression="#c,aqi,co,so2,pm25,pm10", ExpressionAttributeNames = {'#c': 'timestamp'}) items=response['Items']

df=pd.DataFrame(items)

df['timestamp'] = df['timestamp'].apply(lambda x: datetime.strptime(x, '%Y-%m-%d %H:%M:%S'))

dfm = df.melt('timestamp', var_name='metrics', value_name='metric_vals')

dfm.plot(kind='line',figsize=(12,12))

plt.savefig("/tmp/output")





return {
    'statusCode': 200,
    'body': json.dumps('Hello from Lambda!')
}

This is my code.

I am having problem in plt.savefig("/tmp/output")

So you need to change the function timeout :)